<template>
    <div
        :class="{ fullscreen: fullscreen }"
        class="tinymce-container"
        :style="{ width: containerWidth }"
    >
        <textarea :id="tinymceId" :key="tinymceFlag" class="tinymce-textarea" />
    </div>
</template>

<script>
/**
 * docs:
 * https://panjiachen.github.io/vue-element-admin-site/feature/component/rich-editor.html#tinymce
 */
import editorImage from "./components/EditorImage";
import plugins from "./plugins";
import toolbar from "./toolbar";
import load from "./dynamicLoadScript";
import { ossUpload } from "@/utils/file";

// why use this cdn, detail see https://github.com/PanJiaChen/tinymce-all-in-one
const tinymceCDN = "https://cdncashi.langrundata.com/cdn/tinymce%404.9.3/tinymce.min.js";
// "https://cdn.jsdelivr.net/npm/tinymce-all-in-one@4.9.3/tinymce.min.js";

export default {
    name: "Tinymce",
    components: { editorImage },
    props: {
        id: {
            type: String,
            default: function() {
                return (
                    "vue-tinymce-" +
                    +new Date() +
                    ((Math.random() * 1000).toFixed(0) + "")
                );
            }
        },
        value: {
            type: String,
            default: ""
        },
        toolbar: {
            type: Array,
            required: false,
            default() {
                return [];
            }
        },
        menubar: {
            type: String,
            default: "file edit insert view format table"
        },
        height: {
            type: [Number, String],
            required: false,
            default: 200
        },
        width: {
            type: [Number, String],
            required: false,
            default: "auto"
        }
    },
    data() {
        return {
            hasChange: false,
            hasInit: false,
            tinymceId: this.id,
            fullscreen: false,
            tinymceFlag: 1,
            languageTypeList: {
                en: "en",
                zh: "zh_CN",
                es: "es_MX",
                ja: "ja"
            }
        };
    },
    computed: {
        containerWidth() {
            const width = this.width;
            if (/^[\d]+(\.[\d]+)?$/.test(width)) {
                // matches `100`, `'100'`
                return `${width}px`;
            }
            return width;
        }
    },
    watch: {
        value(val) {
            if (!this.hasChange && this.hasInit) {
                this.$nextTick(() =>
                    window.tinymce.get(this.tinymceId).setContent(val || "")
                );
            }
        }
    },
    mounted() {
        this.init();
    },
    activated() {
        this.tinymceFlag++;
        if (window.tinymce) {
            this.initTinymce();
        }
    },
    deactivated() {
        this.destroyTinymce();
    },
    destroyed() {
        this.destroyTinymce();
    },
    methods: {
        init() {
            // dynamic load tinymce from cdn
            load(tinymceCDN, err => {
                if (err) {
                    this.$message.error(err.message);
                    return;
                }
                this.initTinymce();
            });
        },
        initTinymce() {
            const _this = this;
            window.tinymce.init({
                selector: `#${this.tinymceId}`,
                // language: this.languageTypeList["zh"],
                language: "zh_CN",
                language_url: "https://cdncashi.langrundata.com/cdn/tinymce%404.9.3/langs/zh_CN.js",
                body_class: "panel-body ",
                object_resizing: false,
                toolbar: this.toolbar.length > 0 ? this.toolbar : toolbar,
                menu: {},
                plugins: plugins,
                end_container_on_empty_block: true,
                powerpaste_word_import: "clean",
                poweroaste_allow_local_images: true,
                code_dialog_height: 250,
                code_dialog_width: 1000,
                min_height: 200,
                images_upload_handler: function(
                    blobInfo,
                    success,
                    failure,
                    progress
                ) {
                    ossUpload("cdn", blobInfo.blob().name, blobInfo.blob())
                        .then(res => {
                            success("https://langrundata-middle-cdn.oss-accelerate.aliyuncs.com/" + res);
                        })
                        .catch(() => {
                            const file = _this.dataURLtoFile(
                                blobInfo.base64(),
                                blobInfo.blob().name
                            );
                            ossUpload("cdn", blobInfo.blob().name, file)
                                .then(res => {
                                    success("https://langrundata-middle-cdn.oss-accelerate.aliyuncs.com/" + res);
                                })
                                .catch(() => {
                                    failure("上传出错，服务器开小差了呢");
                                });
                        });
                },
                advlist_bullet_styles: "square",
                advlist_number_styles: "default",
                imagetools_cors_hosts: ["www.tinymce.com", "codepen.io"],
                default_link_target: "_blank",
                branding: false,
                statusbar: false,
                paste_data_images: true,
                nonbreaking_force_tab: true, // inserting nonbreaking space &nbsp; need Nonbreaking Space Plugin
                init_instance_callback: editor => {
                    if (_this.value) {
                        editor.setContent(_this.value);
                    }
                    _this.hasInit = true;
                    editor.on("NodeChange Change KeyUp SetContent", () => {
                        this.hasChange = true;
                        this.$emit("input", editor.getContent());
                    });
                },
                setup(editor) {
                    editor.on("FullscreenStateChanged", e => {
                        _this.fullscreen = e.state;
                    });
                },
                // it will try to keep these URLs intact
                // https://www.tiny.cloud/docs-3x/reference/configuration/Configuration3x@convert_urls/
                // https://stackoverflow.com/questions/5196205/disable-tinymce-absolute-to-relative-url-conversions
                convert_urls: false
                // 整合七牛上传
                // images_dataimg_filter(img) {
                //   setTimeout(() => {
                //     const $image = $(img);
                //     $image.removeAttr('width');
                //     $image.removeAttr('height');
                //     if ($image[0].height && $image[0].width) {
                //       $image.attr('data-wscntype', 'image');
                //       $image.attr('data-wscnh', $image[0].height);
                //       $image.attr('data-wscnw', $image[0].width);
                //       $image.addClass('wscnph');
                //     }
                //   }, 0);
                //   return img
                // },
                // images_upload_handler(blobInfo, success, failure, progress) {
                //   progress(0);
                //   const token = _this.$store.getters.token;
                //   getToken(token).then(response => {
                //     const url = response.data.qiniu_url;
                //     const formData = new FormData();
                //     formData.append('token', response.data.qiniu_token);
                //     formData.append('key', response.data.qiniu_key);
                //     formData.append('file', blobInfo.blob(), url);
                //     upload(formData).then(() => {
                //       success(url);
                //       progress(100);
                //     })
                //   }).catch(err => {
                //     failure('出现未知问题，刷新页面，或者联系程序员')
                //     console.log(err);
                //   });
                // },
            });
        },
        dataURLtoFile(base64url, filename) {
            let arr = filename.split("."),
                name = arr[0],
                mime = arr[1],
                fileBuffer = atob(base64url),
                n = fileBuffer.length,
                u8arr = new Uint8Array(n);
            while (n--) {
                u8arr[n] = fileBuffer.charCodeAt(n);
            }
            return new File([u8arr], name, { type: mime });
        },
        destroyTinymce() {
            const tinymce = window.tinymce.get(this.tinymceId);
            if (this.fullscreen) {
                tinymce.execCommand("mceFullScreen");
            }

            if (tinymce) {
                tinymce.destroy();
            }
        },
        setContent(value) {
            window.tinymce.get(this.tinymceId).setContent(value);
        },
        getContent() {
            window.tinymce.get(this.tinymceId).getContent();
        }
        // imageSuccessCBK(arr) {
        //     const _this = this;
        //     arr.forEach(v => {
        //         window.tinymce
        //             .get(_this.tinymceId)
        //             .insertContent(`<img class="wscnph" src="${v.url}" >`);
        //     });
        // }
    }
};
</script>

<style lang="scss" scoped>
.tinymce-container {
    position: relative;
    line-height: normal;
}

.tinymce-container {
    ::v-deep {
        .mce-fullscreen {
            z-index: 10000;
        }
    }
}

.tinymce-textarea {
    visibility: hidden;
    z-index: -1;
}

.editor-custom-btn-container {
    position: absolute;
    right: 4px;
    top: 4px;
    /*z-index: 2005;*/
}

.fullscreen .editor-custom-btn-container {
    z-index: 10000;
    position: fixed;
}

.editor-upload-btn {
    display: inline-block;
}
</style>
